Reference Guide

Policy-Based QoS Commands
Policy-based traffic classification is handled with class maps. These maps classify unicast traffic into one of four
classes. FTOS allows you to match multiple class maps and specify multiple match criteria. Policy-based QoS is not
supported on logical interfaces, such as port-channels, VLANs, or loopbacks.
bandwidth-percentage
Assign a percentage of weight to the class/queue.
S4820T
Syntax
bandwidth-percentage percentage
To remove the bandwidth percentage, use the no bandwidth-percentage command.
Parameters
percentage Enter the percentage assignment of weight to the class/queue. The
range is from 0 to 100% (granularity 1%).
Defaults none
Command Modes CONFIGURATION (conf-qos-policy-out)
Command History
This guide is platform-specific. For command information about other platforms, refer to the
relevant FTOS Command Line Reference Guide .
The following is a list of the FTOS version history for this command.
Version 8.3.1.9.0 Introduced on the S4820T.
Version 8.3.11.1 Introduced on the Z9000.
Version 8.3.7.0 Introduced on the S4810.
Version 6.2.1.1 Introduced on the E-Series.
Usage
Information
The unit of bandwidth percentage is 1%. A bandwidth percentage of 0 is allowed and disables
the scheduling of that class. If the sum of the bandwidth percentages given to all eight classes
exceeds 100%, the bandwidth percentage automatically scales down to 100%.
Related
Commands
qos-policy-output — creates a QoS output policy.
class-map
Create/access a class map. Class maps differentiate traffic so that you can apply separate quality-of-service policies to
each class.
S4820T
Syntax
class-map {match-all | match-any} class-map-name [layer2]
Parameters
match-all Determines how packets are evaluated when multiple match criteria
exist. Enter the keywords match-all to determine that the packets
must meet all the match criteria in order to be a member of the class.
1098